Structures - 1ºESO Technology

Which is an example of natural structure?

• A dinosaur skeleton

• A toilet

• The Eiffel Tower

• A car

A wooden bridge is a…

• Natural structure

• Artificial structure

Which are the types of structures?  

• load, stress, strain, strength, stiffness, stability, slenderness

•  compression, tension, bending, buckling, torsion, shear

• massive, laminar, pneumatic, truss, tensile, triangulated, domed, geodesic

• elastic zone, plastic zone, breaking stress

What is the stress that tends to decrease the length of a material due to the presence of two forces that have the same direction, but opposite direction?

• traction

• bending

• compression

• buckling

What types of stress are there?

• Compresion, traction , flexion, buckling, torsion and cutting

• 1. Compresion, flexion, weight

• 1. Flexion,  torsion, cutting and height

• None

A mountain is an example of a natural structure.

• Verdadero
• FALSO

What is the breaking stress? (tensión de rotura)

• Property of a material to withstand a force even if there is deformation

• The material is so stretched that it undergoes irreversible elongation

• The material bends slightly and it recovers its shape

• 1. the plastic zone is exceeded and the material breaks

What is a structure?

• a structure is the sum of the different parts of a construction made up of different elements joined together and organised in such a way as to support certain loads.

  
  

• a structure is the subtraction of the different parts of a construction composed of different elements separated and organised in such a way as to support certain loads.

  
  

• something built by a human being for use by people on a daily basis for their basic needs in life.

  
  

What is a natural structure? 

• A building made by humans 

  
  

• A type of art

  
  

• A structure formed by nature

• A type of tool